Japan Flora: Rhizomes short-ascending to suberect, rather stout, densely scaly, the scales dark brown, broadly linear, 4-6 mm. long, about 0.5 mm. wide, with a long-filiform tip, entire; stipes more or less flattened, green, often dull purplish on lower side, sulcate on upper side, 5-15 cm. long, 1-1.5 mm. wide, very sparsely scaly, the scales linear, 1-2.5 mm. long, spreading; blades linear to broadly lanceolate, 10-30 cm. long, 3-5 cm. wide, acuminate, the rachis nearly glabrous, gem­mate; pinnae 10-20 pairs, spreading, oblique, oblong-ovate, 15-40 mm. long, 7-10 mm. wide, obtuse or somewhat elon­gate and acute, obliquely cuneate at base, the posterior side entire on lower half, irregularly 2- to few-lobed, truncate and obtusely toothed at the dp, the petiolules 3-5 mm. long; sori along the costas, few to a pinna, linear; indusia 3-7 mm. long, straight, narrow. 

Honshu (Kanto through Tokaido to Kinki Distr.), Shikoku, Kyushu. s. China to the Hima­layas